Automatic device for low-pressure heating.



PATENTED AUG. 16, 1904.

. A EQELGOLD. y AUTOMATIC vDEVIGE4 EOE Low PRESSURE HEATING.'

4 SHEETS-SHEET L APPLIUATION FILED JAN. 11. 1904;

N0 MODEL.

m m A 'Pimm Inde/2z fdr r if EMM 1 No. 768,019.l EATENTEU AUG. 16, 1904.

E EE. GULU. l AUTOMATIC UEVIGE'EUE EGW EEESEUEE HEATING.

APPLICATION FILED JAN. 1l. 1904.

ilo loDEL.

4 SHEETS-SEEN 2.

1.,.. nung No.l 768,019.

TATTNTTU AUG. 16, 1904.

E. H. GOLD. AUTOMATIC UUUTUU TOR Low PRESSURE HEATING.

APPLICATION FILED JAN. l1, 1904.

4 SHEETS-SHEET 3.

N0 MODEL.

NO MODEL.

11H0. 768,019. PATENTED AUG. 16,1904.

E. E'. (101.11. A

AUTOMATIC DEVICE FOR Low PRESSURE HEATING.

. APPLIOATION IILED JAN. 11. 1904.

4 sHEETs-EIlEET` 4.

To all whom, it may concern:

..-=zen of the United States, residing at Shelby,

1 cation.

No. 768,019. l

UNITED l STATES Patented August 16, 1904.

f EGBERTH. GOLD, OF SHELBY, 1NDIANA-` uuTowrA'rloy DEVICE FORLOW-PRESSURE HEATING.

srfEcIFrcATIoN forming part of Letters Patent 110.768,01), dated August16, 1904. A Application led January l1, 1904. SeriaiNorlSSZfl. (Nomodel.)

Be it known that I, Eonirr H. GOLD, a citiin the county of Lake andState of Indiana, haveinvented certain new and useful ,Improvements inAutomatic Devices for Low-Pressure Heating, of which the following isaspecifif My prescrit invention relates more particularly to improvementsin that'class of apparatus which is typically illustrated and claimed inmy copending application, Serial No. 185,122,

'A in `which' thesupply of steam Ato a' radiating vsystem isautomatically controlled, primarily, by means of an expansion devicewhich 1s preferably exposed tothe external atmosphere.

' The'object of mypresent-invention is to providean effectivecleviceo'f-tl1is class which shall'be compact, which may' be entirelylocated outside of any heated spacci-las, for instance,

beneatha car-and which may be readily con- 'structed in double form,soasto provide for the heating of-both sides vof a car. These and .suchother objectsias may hereinafter appear are attained by the'devicesshown vin'ithe accompanying drawings,v'in whicl Figure 11s a vertlcalsection through a part of v'a preferred form of my invention. Fig. 2 isa transverse section ony the line 2 2 of Fig. 1 looking in the directionindicated by the arrows. Fig. A3 is a transverse section on the line 33of Fig. 2 looking' in the ydirection in dicated by the arrows. Fig. 4isan elevation of my improved apparatus, showing' apart oi' the f ioorof a car and of the radiating-pipes with which my apparatus isconnected. Fig fis a horizontalsection through a modilied form ofmyapparatus. Fig. 6 is a section on lthe line 6 6 of Fig. 5, and Fig. 7is a View in elevatlon of such modified form shown in connection withapart of a car-Hoor and a part'of thecar-'hcating pipes.

. Like letters and numerals of reference indicate the same parts in theseveral iig-urea` of the drawings.

A indicates the fioor of .the car, B the trainpipe, C theradiating-pipes, D the steam-supply pipes through which steam suppliedtothe radiating-pipes, E the hand-operated ,con- :5s

trol-valves, Iand F the return-pipes.

tus. This casing comprisesra vtubular section 1, adapted to be' attachedat eachend to the 'train-pipe, an inlet-chamber 2, communicating withthe tubular section 1, a strainer 3, and e valves 6 6 to control thecommunication'be- I tween said valve-chambers and the inlet-cham-IPA'TENT OFFICEQf y G is the maincasing of 'my control appara-"i ber 2..The casing 'G is also providedwith outlet-chambers 7 7, which areseparated from each other, but which communicate with the valve-chambers4 4, respectively, only through .the pipes of the radiating system.

4 4, respectively, is closed by perforated plugs 8, through whichreciprocate the stems 9 9 of the valves 6 6. Eah of said stems isprovided with a ypolygonal collar 10, between which and the plugs 8 areloosely mounted packing-Washers 11, which are adapted to, lit againstthe iin- 'der face of the'plugs 8. `Secured to the upper ends of thevvalve-stems 9 9 are caps 12, provided on their under faces with annularseats for receiving helical springs 13, `which sui*- round thevalve-stems 9 9*L and which are seated at their lower ends upon thevperforated plugs 8. The caps 12 are each provided with a headedstem 14.Pivotally mounted within the chambers 7 7 are levers 15, which arepreferably forked at their ends, one forked endl engaging theiheadedstem 14 of a cap 12 an'dl perforations in the'bottom of the casings 19.,

surrounding the diaphragm-chambers.' The outlet-pipes F F' communicate;respectively, with the outlet-chambers 7 7". v

The apparatus as so constructed is mount- `edas shown in Fig. 4--thatis, below the Hoor of a car-so that any diiculty in tittingthe apparatusto a car is simplified, because all of` the Working parts maybe`.located outside of the car, and the car-floor need be perforatedAlroo 6 5 Communication between the chambers 7 7 andY A lonly for thepassage of the discharge and supply pipes. 'l`he operation ol theapparatus as so constructed is as lollows: The train-pipe B being filledwith high-pressure steam in the usual manner, steam therefrom passesthrough the steam-chamber 2 and thence through the control-valves in thevalve-ehaml/)ers 4- 4, whence it passes into the steam-supply pipes l.)D@ lt will be understood that the radiating system leading from thevalve-chamber 4 is entirely distinct and disconnected from the radiating system leading from the valve-chamber'zJ, one system being used inone side ot'- the car and. the other system upon the other side. (Thevalve E being opened manually, steam is free to tlow through the pipeI), the radiating-pipes C, and back through the discharge-pipes Fintothe chamber7, thence to the chamber 17, and thence around the diaphragm18 and to the atmosphere. It will be evidentthat as soon as theradiating and discharge pipes become filled with steam at such a hightemperature that the steam or vapor reaching thevalve-ehalnbcr 17 willsuiiieiently expand the diaphragm 1S the stem 16, being operated by theexpansion ot' the diaiiliragm 18, will move, the lever 15 upon itspivot, thereby causing the depression of the valvesteni 9 against theexpansion of the spring 13 and closing the inlet-valve 6. Upon thelowering of the temperature in the radiating system, so that the fliaphragm 18 at the extreme further end ot' the radiating system shallcontract, the reverse operation takes place and the valve Gopens,admitting fresh steam. The apparatus will soon balance itseli', so thatthe amount otsteam admitted at train-pipe pressure through the Valve 6will be just Suffieient to keep the diaphragm lb partially eX- panded,so as not to enti rely shut olf the steamsupply nor ,to admit the st amat full pres- Anyl reduction in the external temperature will result ina further contraction of the diaphragm 18 and a eorrespondinglyincreasedsupply of live steam through thel valve (i. y

With this explanation ot' the operation of the apparatus it will be seenthat the et'- lieieney of the apparatus is increased by eeuducting thewater ot' condensation and the stean'i through the exposed pipes le" tothe discllarge-chamber7 before conducting it to the dial)hragni-,chamber17, because the vapor whieh fiows into the pipe F, haring,already lostmueh ot its temperature by radiation trom'the radiatngj-pipes, will bestill further and quickly cooled beeause et' the exposed position ol"the pipe l?, so that the diaphragm will remain contrae/tml until the,radiatingpipes (l are lilled with sileh a bodyot' live steam thatliot'withstanding the reduction of its .temperature, which takes plaeeas it flows may be lnounted elose to the bottom of the,

car, where it will not be so readily damaged as if it were otherwiseconstructed and located.

By-mounting my apparatus in duplicate., so as tov provide for both sidesof the car in one device, I not only attain the advantage ol-compaetness, but obtain an additional element of safety for thefollowing reason: 1Whenever either radiating system is shut ofi1 byclosing the manually-operated supplyvalve E, there is always apossibility of some water oi condensation remainingr inthe pipes andslowly triekling into the outlet-i'xipe'F, for because of the highpressure in the trainpipe some vapor may leak through the valve E andcondense in the radiating-pipes, the water of condensation thereafterslowly trickling down into the pipe F. Because of the exposed positionotl the pipe F water o1 condensation would tend to freeze, and thiseontinual operation of condensing, trickling, and freezing might underseme conditions result in ultimately stopping the passage throughthepipe F; but with my apparatus constructed as shown either side et theheating apparatus is in operation there will IOO be acontinual tlowoflive steam therethrough, y

the hottest temperature of whieh will be within the shaun-chamber 2whieh'flow ot' hot steam will heat the easingG and willalso suiiiciently warmthe air within the chamber 7, and so within the pipe F, to prevent thefreezing o't' water within the pipe F.

ln Figs. 6, and 7 I have shown my apparatus further modified by mountingthe easing horizontally instead oi vertically, thereby enabling me notonly to adapt it to other situations and to still further place myapparatus out ot' harms way, but to attain furthe' ad vantzages in theoperation of the apparatus. It will be noted that in this modiliedstructure theeasings 19",'eoutaining the diaphragni-chambers, arearranged horizontally,v so that the water of eomlensatien and returnsteam trom the return-pipes l" F will not iow through the chambers IQ"z1nd thence to the atmosphere, but will flow through outletports 2()in the bottom ell the chambers'T" 7". By means ot' this e mstruetion thewater ot' eomlensation never enters the diaphragmchamber, the diaphragmis notailected by hot water, which, coming in contact therewith, wouldtend to partially expand thediaphragm,

through the exposed pipe l4, tlmsteam will f but the diaphragm remainseontraeted until still be ol a sullieiintly high temperaturol the ya vorllowine through the returni )es rs r-i IIO resale..

lF f'is of such a temperature .that entering.

' loc -nu'ts 23 2'4.

thediaphragm-ehambers and surrounding the i diaphragmsit will promptlyexpand the dia-vr phragme, while, on the other hand,l as soonv 'as' thevaporfiowing through the. pipe F cools i the diaphragm may promptlycontract. Iv4

thus obtain a morecsensitive operation and prompt response of thecontrol device than in thestructures shown in the other figures. It.will be noted-that'in'this modified form I have shown springs 21arranged in the diaphragm chambers-4 and expanding against vplates 22,which arearranged on the faces of the diaphragms and surrounding theanges 'secured to -the lower ends of the stems 16 16, so as to insurethe prompt opening of the valves 6.6 upon the contraction of thediaphragms, although it is entirely possible .to dispense with allsprings and rely upon steampressure to open the' valves 6 6".

In the Structure shown the diaphragms are pr vided with-the usualadjusting-screws and I do not hereby claim any apparatus comprising `aradiating system communicating with the atmosphere combined with-athermostatic motor exposed w\ithin said system and arranged to controlthe admission of a heating 'medium to its inlet end, asdisclosed -andclaimed in my Patent No. 758,436, dated April .26, 1904.

Ielaim y I1. In a device of the class described, the combination with aradiating system located within a space lto be heated, of meansfor con-'trolling the supply of a heating medium to saidradiating system, saidmeans being lo-v cated outside ofthe space to be heated by the radiatingsystem and comprising a casing containing a chamber through which theheating medium is supplied to the radiating system,

acontrol-.valvel mounted within said easing, so as to control the How ofthe heating medium to the' radiating system, a second chamber, anexposed return-'pipe leading from the radiating system to said secondchamber,

" mechanism mounted within said lsecond chamber and 'arranged to operatesaid' 'control-valve, and a thcrmostatic deviceek'posed to the tem-g.peraturc of vapor owing into said chamber thro'ugh said return-pipe andarranged to actuate'said valve-operating mechanism, substantially asdescribed. V

2. ln ya device ot' the class described, the

combination with two independent radiating systems located within aspace to be heated,

' of means for separately controlling the sup# ply of' a heating mediumto said radiating syster'ns, said means comprising a casing located:outside oi' the space to be heated by the radiating systems, separatereturn-pipes located outside of the space to be heated and leading fromsaid radiating systems, respectively, to

i separate chambers within said casing, thermostatic devices exposed,respectively, to the temperatureof the vapor iiowingthrough saidreturn-pipes andmechanism operated by said thermostaticdevicesrespectively, i'or controlimg thesupply of the heating medium to saidrespective radiating systems.

3. Infa device of the class described, the

gl combination with a radiating system, of a casating system, saidcasing being provided with -an outlet interposed between the return-pipefrom the radiating system and the thermostatic'device,`for the dischargeof water of condensatvion.

11. In a device of the classdescribed, the combination with a radiatingsystem in Aopen communication with th'e atmosphere, of a casingcommunicating with both ends of the radiating system and provided withmechanismfor controlling the supply of a heating me-v dium to saidradiating'system, a thermostatic device arranged to actuatesaid-:controlling mechanism and exposed to the action of the vaporreturning to said casing from the radiating system, said casing beingprovided with` an outlet interposedbetween the return-pipe from theradiating systen and the thermostatic device, for the discharge of waterof condensation.

' 5.- In a device of the class described, the

IOO

combination withv two independent radiating systems located within aspace` to be heated and in open communication with the atmosphere, ofmeans for separately controlling the supply of a heating medium to saidradiating systems, said means comprising a casing located outside of thespace to be heated by the radiating systems, separate return-pipeslocated outside of thespace to be heated and l'eading,fr0m saidradiatingsystems, respectively, to separate chambers within said casing,thermostatic devices exposed, respectively, to the temperature'of thevapor flowing through said return-pipes and mechanism operated by saidthermostatic devices, respectively, for controlling the supply of theheating medium to said respective radiating systems.

6. In a device of the class described, the combination with a radiatingsystem, in open communication with the atmosphere, located within aspace to be heated, of means forcentrolling the supply of a heatingmedium to said radiating system, Said means being lo cated outside ot'the space to be heated by the radiating system and comprising a easingcontaining a chamber through which the heating medium is supplied to theradiating' system, a control-valve mounted within said casing, so as tocontrol the How oi' the heating medium IIO IZS

to the radiating systen1,'a second chamber, an exposed return-pmeleadlng :from the radlating syetmn to said second chamber, mechanismmounted within said second chamber and arranged to operate saidcontrol-valve, and a thermestatie devme exposed to the temperature ofvapor owlng lnto sind chamber l 'olrough said returmpipe and arranged toac-

